2018 Porsche 718 Cayman 2.5 S
Price: £38,980. Fair price: £1,306 (3%) under the AskCar estimate of £40,286, our expected asking price for this car from its model, age, mileage and specification, drawing on 313 priced Porsche 718 Cayman adverts on AskCar as of 5 November 2026.
AskCar lists 323 used Porsche 718 Cayman from 207 UK dealerships, as of 5 November 2026.
Overview
- Make: Porsche
- Model: 718 Cayman
- Trim: S
- Version: 2.5 T S PDK RWD Euro 6 (s/s) 2dr (345 bhp)
- Year: 2018
- Mileage: 50,000 miles
- Fuel: Petrol
- Body: Coupe, 2 doors, 2 seats
- Engine: 2.5 litres, 345 bhp
- Gearbox: Automatic (PDK)
- Drive: Rear-wheel drive
- Colour: White
- CO2: 167 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2018 Porsche 718 Cayman is advertised with 50,000 miles, approximately 10,600 above the typical mileage for its age. The AskCar estimate for this car is £40,286. It is priced at £38,980, which is £1,306 below that estimate. The AskCar estimate uses 313 UK dealer adverts for the Porsche 718 Cayman, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 42 days ago, the asking price has dropped by £1,000. The seller is Auto100.Co.Uk, based in Sutton-in-Ashfield. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 5 November 2026.
Price
Fair price: £1,306 (3%) under the AskCar estimate of £40,286.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 313 priced Porsche 718 Cayman adverts across different ages and specifications, as of 5 November 2026.
A 2018 Porsche 718 Cayman with the 2.5 petrol engine is typically advertised at £45,000: the median of the 30 for sale on AskCar, as of 5 November 2026.
Time on sale
This 2018 Porsche 718 Cayman has been on sale for at least 42 days.
Price history
AskCar first saw this advert on 24 September 2026 at £39,980. Its asking price is now £38,980, £1,000 less. The latest price cut was seen on 20 October 2026.
Price changes recorded:
- 24 September 2026: £39,980
- 2 October 2026: £39,480
- 9 October 2026: £38,980
- 14 October 2026: £38,780
- 20 October 2026: £38,480
- 25 October 2026: £38,980
Mileage and MOT
Advertised mileage is about 10,600 miles higher than the median mileage of a 2018 Porsche 718 Cayman on AskCar.
Similar cars
11 other 2018 Porsche 718 Cayman S 2.5 petrol automatic coupes are for sale at UK dealers, from £33,900 to £48,995, as of 5 November 2026.
The 3 closest to this car in mileage:
- 2018 Porsche 718 Cayman S, 2.5 petrol coupe, silver. Mileage: 51,000 miles. Price: £34,480, £4,500 less than this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-80dcf998545a
- 2018 Porsche 718 Cayman S, 2.5 petrol coupe, grey. Mileage: 46,106 miles. Price: £39,455, £475 more than this car. Dealer: Northridge Cars Hemel Hempstead in Hemel Hempstead. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-ddbe0eb11e80
- 2018 Porsche 718 Cayman S, 2.5 petrol coupe, silver. Mileage: 41,000 miles. Price: £43,000, £4,020 more than this car. Dealer: Rsj Sports Cars in Slough. AskCar page: https://askcar.co.uk/car/porsche-718-cayman-2018-21a5b259d348
Browse all Porsche 718 Cayman cars for sale · 2018 Porsche 718 Cayman price guide
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Photos
49 photos of this car are on its AskCar page.
As of 5 November 2026, AskCar lists 595,776 cars and vans from 12,945 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.